Thermomechanical treatment of super high strength Cu-8.0Ni-1.8Si alloy

摘要：

The microstructures and properties of Cu-8.0Ni-1.8Si alloy subjected to different heat treatments were examined by mechanical and electrical properties measurements,optical and transmission electron microscopes observation.The results show that the precipitation process during aging can be accelerated by the cold deforming before aging.As the Cu-8.0Ni-1.8Si alloy is subjected to solution treatment at 970 for 4 h,cold roll ℃ ing to 60％ reduction,and then aging at 450 f ℃ or 60 min,its properties are σb=1 050 MPa,σ0.2=786 MPa,δ=3.2％ and conductivity 27.9％(IACS).The strengthening mechanisms of the alloy include spinodal decomposition strengthening,ordering strengthening and precipitation strengthening.The precipitation of the alloy is nano-scale Ni2Si phase.

关键词： Cu-8.0Ni-1.8Si alloy thermomechanical treatment spinodal decomposition ordering

作者: PAN Zhi-yong WANG Ming-pu LI Zhou XIAO Zhu CHEN Chang

作者单位: School of Materials Science and Engineering,Central South University,Changsha 410083,China;Key Labor School of Materials Science and Engineering,Central South University,Changsha 410083,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）